TW202241603A - Defect alarm system and defect alarm method for surface quality of steel coil - Google Patents

Abstract

A defect alarm system for surface quality of a steel coil is provided, which includes a surface inspection system, a server, and an inspection stage. The surface inspection system inspects a steel strip based on an order for generating defect coordinates and defect images corresponding to the defect coordinates. The steel strip is used to form the steel coil. The server is communicatively connected to the surface inspection system, and the server includes a data base for storing the defect images and the defect coordinates. The inspection stage has a computer system which is communicatively connected to the server. The steel coil is uncoiling to the steel strip. The computer system provides a user interface for showing the defect images based on the order reversely and showing location marks based on the defect coordinates.

Description

Steel coil surface quality defect early warning system and defect early warning method

This disclosure relates to a defect early warning system, in particular to a defect early warning system applied to the surface quality of steel coils, and a defect early warning method using the defect early warning system.

The two main functions of steel rolling are to roll the steel billet into the required size of the end product, such as thickness, length, and width, and to refine the coarse solidification structure of the steel billet and improve the surface material. The process is divided into hot rolling and cold rolling. Generally speaking, the process of cold rolled steel coils is obtained after the hot rolled steel coils are processed by pickling cold rolling, electrolytic cleaning, annealing, quenching and tempering rolling, and finishing. product. As for the management of the surface quality of steel coils, conventional steel coil reprocessing is still carried out by inspection personnel through visual inspection to identify and locate defects before reprocessing, such as cutting off. However, the size and distribution of defects on the surface of steel coils are not fixed, which not only causes difficulties and omissions in identification, but also indirectly leads to limited production capacity.

According to the above purpose, an aspect of the present disclosure provides a defect early warning system, including a surface quality inspection system, a server, and an inspection station. Among them, the surface quality detection system is used to detect the surface of the steel strip according to a sequence to generate a plurality of defect coordinates and a plurality of defect images corresponding to these defect coordinates, and the steel strip is used to form a steel coil; the server system The communication is connected to the surface quality inspection system, the server includes a database for storing the coordinates of these defects and the images of these defects; and the inspection station with a computer system, wherein the steel coil passes through the inspection station after being unwound, and the computer system is connected to the server by communication A computer system is used for providing a user interface, thereby displaying the defect images in reverse order and displaying a plurality of positioning marks according to the defect coordinates.

In some embodiments, the user interface is further used to control the inspection speed of the inspection station and display the length of the steel coil to be inspected.

In some embodiments, the user interface is further used to display a plurality of defect numbers and at least one defect classification corresponding to the defect coordinates.

In some embodiments, the user interface is further used to select a target defect, and the inspection station is used to control the inspection line according to one of the defect coordinates corresponding to the target defect so that the target defect is located on the inspection station.

In some embodiments, the user interface is further used to select a specific defect category, and reversely display the defect images with the specific defect category and display the corresponding positioning marks according to the defect coordinates corresponding to the specific defect category.

In some embodiments, the server further includes a second database for storing identity information and process information of the steel coil.

In some embodiments, the user interface is further used to display the identity information and process information of the steel coil inspected by the inspection station.

Another aspect of the present disclosure is to provide a defect early warning method for a computer system of an inspection station. The defect early warning method includes: detecting the surface of the steel strip through a surface quality inspection system according to a sequence to generate a plurality of defect coordinates and corresponding A plurality of defect images to these defect coordinates, and the steel strip is used to form steel coils; store these defect coordinates and these defect images through the database of the server, wherein the steel coils are unwound and pass through the inspection station; and provide for use or interface, thereby displaying the defect images in reverse order and displaying a plurality of positioning marks according to the defect coordinates.

In some embodiments, the defect early warning method further includes: selecting a target defect through the user interface, and the inspection station controls the inspection line according to one of the defect coordinates corresponding to the target defect so that the target defect is located on the inspection station .

In some embodiments, the defect early warning method further includes: selecting a specific defect category through the user interface, and thereby displaying the defect images with the specific defect category and the defects corresponding to the specific defect category in reverse order. coordinates to display the corresponding positioning markers.

The following disclosure provides many different embodiments or illustrations for implementing different features of the claimed subject matter. Specific illustrations of components and arrangements described below are intended to simplify the present disclosure. These are of course only examples and are not intended to be limiting.

FIG. 1 is a schematic diagram of a steel strip manufacturing end according to some embodiments of the present disclosure. The steel strip manufacturing end 110 is used for manufacturing and various processing of the steel strip. For example, the steel strip manufacturing end 110 may include rolling mills, annealing areas and other equipment for performing rolling, galvanizing or annealing processes. After the steel strip is manufactured or processed, the steel strip can pass through the surface quality inspection system 120 for surface quality inspection, and the steel strip after the inspection is coiled into a steel coil 130 .

In some embodiments, the surface quality inspection system 120 captures the image of the moving steel strip by means of a photosensitive element disposed on the upper and lower surfaces of the steel strip, such as a charge-coupled device (Charge-coupled Device; CCD) sensor or complementary metal oxide semiconductor (Complementary Metal-Oxide Semiconductor; CMOS) sensor. The surface quality inspection system 120 can automatically identify defects on the upper and lower surfaces of the steel strip through image processing and image recognition technology, and then classify each defect into its type according to the classification (such as: scratches) predefined by the system and give One is to classify defects and generate various information related to defects, such as: defect number (also known as defect number), coordinates (also known as defect coordinates), image (also known as defect image), size, or other similar Information. As shown in FIG. 1 , the surface quality inspection system 120 is communicatively connected to a server 140 , and the server 140 includes a defect database 142 . The surface quality inspection system 120 can transmit the above-mentioned various information related to defects to the server 140 and store them in the defect database 142 .

As shown in FIG. 1, the server 140 further includes a process parameter database 144 for storing identity information and process information of the steel strip, such as: code, state, steel type, speed, width, length, or others of the steel strip. similar information.

As shown in Figure 1, after the steel strip manufacturing end 110 completes the steel strip manufacturing and processing, the steel strip will pass the surface quality inspection system 120 for surface quality inspection, and a plurality of defects D1, D2...Dn will be generated in sequence, and then the steel strip Coiled into steel coil 130 and discharged. Therefore, the first detected defect D1 is located at the innermost circle of the steel coil 130 , and the last detected defect Dn is located at the outermost circle of the steel coil 130 .

In some embodiments, the quality control personnel will determine whether to re-examine the defect, and if so, the steel coil 130 will be sent to the inspection line 200 for re-inspection. The inspection line 220 will be further described below.

FIG. 2 is a schematic diagram of a test line 200 according to some embodiments of the present disclosure. The inspection line 200 includes an inspection station 210 , a feeding module 230 , and a discharging module 240 . In some embodiments, the infeed module 230 may include an uncoiler, a magnetic conveyor belt, an inlet side nip, a leveler, a thickness gauge, an inlet side shear, etc., and the outfeed module 240 may include an outlet side Shearing machine, exit side nip roll, rewinding machine, etc., but for the sake of simplicity, FIG. 2 does not show all the equipment of the inspection line 200. When the steel coil 130 is determined to be re-inspected, the steel coil 130 is uncoiled into a steel strip by the feeding module 230 and re-inspected through the inspection station 210. The inspection station 210 can be used for horizontal inspection or vertical inspection. This disclosure Not limited thereto, after the re-inspection is completed, the steel strip will be coiled into a steel coil again by the discharging module 240 and discharged. Therefore, when the steel coil 130 is uncoiled into a steel strip, the defect Dn at the outermost circle of the steel coil 130 will pass through the inspection station 210 first, and the defect D1 at the innermost circle of the steel coil 130 will pass through the inspection station 210 last. . For example: the steel strip is inspected by the surface quality inspection system 120 to detect defects D1, D2...Dn-1, and Dn in sequence, and on the contrary, the defects on the steel strip are in the order of Dn, Dn-1...D2, and D1 Pass inspection station 210 . Therefore, the defect re-inspection order of the steel coil 130 is opposite to the order in which defects are detected at the steel coil manufacturing end.

As shown in FIG. 2 , the inspection station 210 further includes a computer system 220 , and the computer system 220 is communicatively connected to the server 140 . The computer system 220 is used to access defect information in the defect database 142 and process information and identity information in the process parameter database 144 , and display the information on the computer system 220 . When the defects on the steel strip pass through the inspection station 210 in the order of Dn, Dn-1...D2, and D1, the computer system 220 also sequentially and synchronously displays the defect information of Dn, Dn-1...D2, and D1, Such as coordinates, categories, and images. In addition, the operator can control the inspection line 200 through the computer system 220 to move a specific position of the steel belt to the inspection station 210 . In this way, with the assistance of the computer system 220, the user can compare the defects on the steel strip with the defect information displayed by the computer system 220, so as to achieve the purpose of accurately identifying and locating the defects.

FIG. 3 is a schematic diagram of a user interface 300 according to some embodiments of the present disclosure. The computer system 220 can further provide a user interface 300 for displaying defect information and process information of the steel coil being reinspected, and to control the inspection line 200 through the user interface 300 . As shown in Figure 3, the user interface 300 includes a plurality of fields, among which the field 310 can display the process information of the steel coil, the field 330 can display the schedule, the field 340 can display the defect distribution map, and the field 350 can display Defect information, and fields 360, 370 may display defect images.

In some embodiments, the process information displayed in column 310 may include strip identity information (eg code), status, steel type, speed, width, length, or other similar information. The field 310 can further display the length of the steel strip to be inspected and the real-time position of the steel strip on the current inspection station 210 , such as length or width. The schedule displayed in column 330 is the identity information of the steel coils that must be re-inspected sent from other computer systems (not shown) connected to the computer system 200, which may also include the steel coils that have completed the re-inspection. The defect information displayed in column 350 may include defect number, defect coordinates, defect classification, size, note, and other relevant information.

In some embodiments, the defect distribution map displayed in column 340 graphically displays the distribution status of the defects on the steel strip, which can assist the user to quickly and accurately find the target defect on the steel strip. The user interface 300 can convert the coordinate positions of defects and related information, and display the position of each defect on the steel strip in a manner similar to a planar map, as well as the relative relationship between the positions of each defect. For example, the column 340 further includes sub-fields 341~344, wherein the sub-column 341 is used to display the defect distribution status on the upper surface of the complete steel strip according to the defect coordinates, and the position where there is a defect is displayed. star-shaped symbol); similarly, the sub-column 343 shows the defect distribution state on the lower surface of the complete steel strip according to the defect coordinates, and the position where the defect exists also displays the positioning mark. In addition, the parts of the steel strip currently on the inspection station 210 are marked with oblique lines or other prominent ways, such as the real-time positions P1 and P2 in FIG. 3 . The real-time positions P1 and P2 will move in the sub-column 341 and the sub-column 343 synchronously with the inspection line 200, and graphically show that the part of the steel strip inspected by the current inspection station 210 is located in the complete steel strip which section. The sub-field 342 is used to enlarge and display the real-time position P1, and similarly, the sub-field 344 is used to enlarge and display the real-time position P2. Therefore, the sub-field 342 and the sub-field 344 will also correspondingly display the enlarged map of the real-time positions P1 and P2 as they move. In addition, the column 360 and the column 370 are used to display defect images corresponding to each defect in the real-time positions P1 and P2.

In some embodiments, the computer system 220 can automatically control the inspection speed of the inspection station 210 according to the distribution state of the defects, for example: for the area where the defects are distributed on the surface of the steel strip, the inspection line 200 is controlled to speed up the inspection speed of the inspection station 210. Inspection speed, while in areas with more defects, the inspection line 200 is controlled to reduce the inspection speed of the inspection station 210, so as to increase the production capacity.

In some embodiments, the user can select a target defect on the user interface 300 provided by the computer system 220, and then the computer system 220 sends the defect coordinates and other related information of the target defect to the inspection station 210, and the inspection station 210 then The inspection line 200 can be controlled so that the part of the steel strip where the target defect is located moves to the inspection station 210, and the user interface 300 also simultaneously displays the defect information and process information of the target defect.

In some embodiments, the user can select a specific defect category on the user interface 300 provided by the computer system 220, and display the defects in the order opposite to those detected by the surface quality inspection system 120 at the steel strip manufacturing end. The defect images of the specific defect category and corresponding positioning marks are displayed according to all defect coordinates corresponding to the specific defect category. For example, if a specific defect category includes defect D1 and defect D2, only the positioning marks of defect D1 and defect D2 will be displayed in column 341 and column 342, and only the positioning marks of defect D1 and defect D2 will be displayed in column 360 and column 370. Defect images of defect D1 and defect D2.

It is worth mentioning that the user interface shown in FIG. 3 is only an example, and those skilled in the art can modify the above contents to design other interfaces. The present disclosure does not limit the typesetting of the user interface. In addition, the various information displayed on the user interface mentioned above may be represented by text, graphics, symbols or any other means, and the present disclosure is not limited thereto.

FIG. 4 is a flowchart of a defect early warning method 400 according to some embodiments of the present disclosure. In operation 410, the computer system 220 inspects the surface of the steel strip according to a sequence through the surface quality inspection system 120 to generate a plurality of defect coordinates and a plurality of defect images corresponding to the defect coordinates, wherein the steel strip is used to form a steel coil 130.

In operation 420 , the computer system 220 stores the defect coordinates and defect images through the defect database 142 of the server 140 , wherein the steel coil 130 passes through the inspection station 210 after being unwound.

In operation 430 , the computer system 220 provides the user interface 300 , and uses the user interface 300 to display the defect images reversely to the order described in operation 310 , and display a plurality of positioning marks according to the defect coordinates.

In some embodiments, the defect warning method 400 can further select a target defect through the user interface 300 , and the inspection station 210 controls the inspection line 200 so that the target defect is located on the inspection station 210 according to the defect coordinates corresponding to the target defect.

In some embodiments, the defect early warning method 400 can further select a specific defect category through the user interface 300, and display the defect images with the specific defect category through the user interface 300 in a sequence opposite to that described in operation 310 , and display a plurality of corresponding positioning marks according to the defect coordinates corresponding to the specific defect classification.

The foregoing summarizes features of many embodiments so that those of ordinary skill in the art can better understand aspects of the disclosure. Those skilled in the art should understand that the equivalent structure does not depart from the spirit and scope of the present disclosure, and various changes, exchanges and substitutions can be made without departing from the spirit and scope of the present disclosure.

110:Steel strip manufacturing end 120: Surface quality inspection system 130: steel coil 140: server 142: Defect database 144: Process parameter database 200: inspection line 210: inspection station 220: Computer system 230: Feed module 240: Discharging module 300: user interface 310, 330, 340, 350, 360, 370: fields 400: method 410, 420, 430: operation D1, D2, Dn-1, Dn: Defects P1, P2: instant position

According to the following detailed description and reading together with the accompanying drawings, the aspects of the present disclosure can be better understood. It is to be noted that, as is the standard practice in the industry, many features are not drawn to scale. In fact, the dimensions of many of the features are arbitrarily scaled for clarity of discussion. FIG. 1 is a schematic diagram of a steel strip manufacturing end according to some embodiments of the present disclosure. FIG. 2 is a schematic diagram of a test line drawn according to some embodiments of the present disclosure. FIG. 3 is a schematic diagram of a user interface according to some embodiments of the present disclosure. FIG. 4 is a flowchart of a defect early warning method according to some embodiments of the present disclosure.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

130: steel coil

140: server

142: Defect database

144: Process parameter database

200: inspection line

210: inspection station

220: Computer system

230: Feed module

240: Discharging module

D1, D2, Dn-1, Dn: Defects

Claims (10)

A defect early warning system comprising: A surface quality inspection system for inspecting the surface of a steel strip according to a sequence to generate a plurality of defect coordinates and a plurality of defect images corresponding to the coordinates, wherein the steel strip is used to form a steel coil; A server, connected to the surface quality inspection system through communication, the server includes a database for storing the defect coordinates and the defect images; and An inspection station, including a computer system through which the coil is unwound, is communicatively connected to the server, the computer system is configured to provide a user interface whereby the reverse order is displayed The defect images and a plurality of positioning marks are displayed according to the defect coordinates. The defect early warning system as claimed in claim 1, wherein the user interface is further used to control an inspection speed of the inspection station and display a length to be inspected of the steel coil. The defect early warning system according to claim 2, wherein the user interface is further used to display a plurality of defect numbers and at least one defect classification corresponding to the defect coordinates. The defect early warning system as described in claim 3, wherein the user interface is further used to select a target defect, and the inspection station is used to control an inspection line according to one of the defect coordinates corresponding to the target defect so that the The target defect is located on this inspection station. The defect early warning system as described in claim 3, wherein the user interface is further used to select a specific defect classification, and display the defect images with the specific defect classification in reverse order and according to the corresponding defect classification The defect coordinates display the corresponding positioning marks. The defect early warning system as described in Claim 1, wherein the server further includes a second database, wherein the second database is used to store an identity information and a process information of the steel coil. The defect early warning system as described in Claim 6, wherein the user interface is further used to display the identity information and the manufacturing process information of the steel coil inspected by the inspection station. A defect early warning method for a computer system of an inspection station, the defect early warning method comprising: A surface quality inspection system is used to inspect the surface of a steel strip according to a sequence to generate a plurality of defect coordinates and a plurality of defect images corresponding to the coordinates, wherein the steel strip is used to form a steel coil; storing the defect coordinates and the defect images through a database of a server where the coil passes through the inspection station after being unwound; and A user interface is provided whereby the defect images are displayed in reverse order and a plurality of positioning marks are displayed according to the defect coordinates. The defect early warning method described in Claim 8 further includes: A target defect is selected through the user interface, and the inspection station controls an inspection line according to one of the defect coordinates corresponding to the target defect so that the target defect is located on the inspection station. The defect early warning method as described in Claim 9 further includes: A specific defect classification is selected through the user interface, thereby displaying the defect images with the specific defect classification in reverse order and displaying the corresponding positioning marks according to the defect coordinates corresponding to the specific defect classification.

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